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Unread 25-02-2011, 12:51
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Jeffy Jeffy is offline
Retired, for now
AKA: Jeff Gier
FRC #2410 (Metal Mustang Robotics) #159 (Alpine Robotics)
Team Role: College Student
 
Join Date: Mar 2008
Rookie Year: 2008
Location: Fort Collins
Posts: 523
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Re: 2410 Releases Shadowfax

Quote:
Originally Posted by Alpha Beta View Post
I'm curious how much pushing force 8 pneumatic wheels geared at 3.5 ft per second can generate. Sounds like your planning to bull your way through any defense that stands in your way. I like it.

I love the 4 bar. That is on our list of things to build one day.

I'm expecting a sub 2-second minibot from you guys in KC. Can't wait to see it.
Theorectically pushes with just over 300 pounds of force before the tires slip.
In practice, it pushes with about 240 pounds. Mostly due to the wear of the tires, how dusty our carpet is and we pumped up the pressure significantly since we did the Coeffcient of friction test, so we lost some contact patch.
We are loving these wheels so far, after you get past the advantages of the tread pattern "digging in", and the wheels deforming for large contact patch, they are just plain stickier than the roughtop treads we have tried in the past.

Funny you should mention wanting to build a 4 bar, we still have an elevator on our list of things to do, wanna trade?

As per the minibot:
Thank you for the flattering assumptions. Right now, our "slow bot" goes in 4.75 seconds. The one in design is geared at 1.15 seconds, so if we see 1.4, that will be great!
The mini bot has turned into much more of a project than we first anticipated, kinda like ball control or the challenge of a kicking mechanism last year.
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Metal Mustang Robotics 2410 (2008-2011)
2008 STL Rookie All-Star
2010 GKC Finalists
2010 OKC Champions
Alpine Robotics 159 (2012-)
2012 CO Finalists

700 miles from home, 2 miles from FRC. Life is good.
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